> This is why copyleft is necessary How would copyleft* have prevented this? AGPL might, but GPL (and therefore, copyleft) doesn't prevent the upthread outcom

> This is why copyleft is necessary How would copyleft* have prevented this? AGPL might, but GPL (and therefore, copyleft) doesn't prevent the upthread outcome. * - GPL is the prototypical/original [as far as I know] widely-used example of a copyleft license and the startup using nodemailer could have done that just as well (and for free) if nodemailer was GPL-licensed.